It depends on which station you get off at Haikou. Anyway, no matter which station, either wait for the 4 1 bus at the East Station (at the entrance of the East Station) or wait for the 2 1 bus at the entrance of Shihai (opposite the main entrance of Shihai). Please be clear before getting on the bus. Don't make mistakes. Only these two buses can get to the airport. When you arrive at the airport bus stop, you must take the No.2 bus. The 300-meter path to the airport lobby is full of 5 yuan.

Otherwise, you can take the airport bus to the Civil Aviation Hotel. 15 yuan.